@ARTICLE{Małysa_Ewa_Floatability_2000,
 author={Małysa, Ewa},
 number={No 4},
 journal={Gospodarka Surowcami Mineralnymi - Mineral Resources Management},
 pages={45-54},
 howpublished={online},
 year={2000},
 publisher={Komitet Zrównoważonej Gospodarki Surowcami Mineralnymi PAN},
 publisher={Instytut Gospodarki Surowcami Mineralnymi i Energią PAN},
 abstract={It is a common practice in flotation to compare the action ofvarious reagents on the basis ofresults of experiments carried out at several concentrations or amounts of reagents, identical for each reagent used. The same concentrations do not mean, however, the same surface coverages or the same dispersion of gas bubbles in the flotation cell. In this paper, results of flotation ofvarious coals were analysed as a function of concentration and surface activity of aliphatic alcohols. Coal slimes from the Halemba, Rydułtowy, and Pokój Mines were floated. The aliphatic alcohols used as collecting/frothing agents were n-butanol and n-pentanol, and n-hexanol, It was found that the concentrate yields and ash content in tailings increase with the concentration of these alcohols. Also, at the same bulk concentrations, the longer the hydrocarbon chain of the alcohol molecule, the better the flotation results. The increase in floatability of coals with the length of the hydrocarbon chain in the alcohol molecule is associated with a simultaneous increase in surface activity ofthe homologous series ofalcohols. When the processes are compared at the same surface activity (the same surface pressure), the concentrate yields are practically independent of the alcohol used. This shows that the action of aliphatic alcohols in flotation consisted mainly in enlarging the solution-gas interface, and their collecting properties in respect to coal slimes studied were very similar.},
 type={Article},
 title={Floatability of coals as a function of surface activity of the alcohols},
 URL={http://journals.pan.pl/Content/132866/PDF/6_GSM_16_4_2000_Malysa_Floatability.pdf},
 keywords={coal, flotation, surface tension, surface activity, alcohols},
}